Is CASPER, CITY OF's water safe to drink?
CASPER, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 59,000 people get their water from it, across 22,754 connections.
How this compares nationally
Out of 12,903 systems in this dataset, CASPER, CITY OF ranks 8,940th by violation burden (31th percentile) - 3 violations total, 1 health-based.
How CASPER, CITY OF compares within WY
WY's 44 covered systems average 5.0 health-based violations each; CASPER, CITY OF carries 1, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for CASPER, CITY OF is from 1997-01-02 (health-based: 1997-01-02). Last reported to EPA: 06/29/2026.
What kind of problem, specifically
CASPER, CITY OF's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
This is what CASPER, CITY OF reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and CASPER, CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 8,940th of 12,903 by violation count. The guide to what this data misses covers that gap.